Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Study on Decreasing Behavior of Strength ＆ Elastic Parameters due to Water Infiltration in Rock Cores (II)

침투류에 의한 암석시료의 함수 저감거동 연구 (II)

  • 조홍제 (울산대학교 건설환경공학부) ;
  • 정일수 (울산대학교 대학원, (주)부광엔지니어링) ;
  • 문종규 (동명기술공단(주))
  • Received : 2012.09.27
  • Accepted : 2012.11.13
  • Published : 2012.11.28
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Abstract

Targeting 9 types of rocks, which have high frequency of excavation, the researcher has analyzed decreasing behaviors of elastic modulus due to water content. The elastic modulus decreasing behaviors have been classified into 5 steps by uniaxial compressive strength. The results indicate that all of 5 sedimentary rocks and andesite show single decreasing behavior and granite, rhyolite, and gneiss demonstrate another decreasing behavior. Moreover, sensitivity of water content in granite, rhyolite, gneiss is almost twice as fast as that of the other rocks and their residual value of elastic modulus is very low.

국내에서 출토되는 퇴적암, 화성암 및 변성암군중 출토빈도가 높은 9개 암종을 대상으로 함수에 의한 탄성계수의 저감거동을 분석하였다. 일축압축강도 기준으로 20MPa 범위로 5개단계로 분활하여 단계별, Group별로 함수 저감거동을 분석한 결과는 5개 퇴적암 전부와 화성암군인 안산암을 포함한 모집단은 단일 저감거동을 보이며, 화성암군인 화강암, 유문암과 변성암군인 편마암은 또 다른 동일 거동을 보이며, 더욱이 저감속도가 퇴적암군을 포함한 모집단에 비해서 2배이상 빠르며 탄성계수의 잔존값도 매우 낮게 나타났다.

Keywords

References

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  2. 침투류에 의한 암석시료의 함수 저감거동 연구 (III) vol.29, pp.1, 2012, https://doi.org/10.7843/kgs.2013.29.1.149